Cat Age Calculator

Convert the cat age to human years and human years to cat years with the cat age calculator.

Created by Helen Stark

Helen Stark
Helen Stark

Student of Harvard university, she loves to observe new things about society, she studies Wikipedia more and learns about quantum physics on the internet. She loves dancing and singing songs.

Reviewed by Nick Walker

Nick Walker
Nick Walker

Done PHD of nuclear physics from the University of Pennsylvania. He is always seeking ways to explain science in easy terms. Moreover, he loves coffee & its beans more than his girlfriend (not at all).

You can easily convert a cat’s age into human years or vice versa using our cat age calculator. These calculations can be done by cat owners or enthusiasts who need to understand their cat’s age in human terms. Also, they use the given cat age chart to assess their cat’s life stage in a way that’s relatable to human aging. 

What Age Is My Cat?

To calculate cat years to human years know the simple fact that 1 first year of a cat year is equal to 15 human years. The second year of a cat's age is parallel to nine years of human years. So 2 cats years approximately 24 human years.

1 first cat’s year = 15 human years 
2nd cat's year = 9 human years 
3rd cat's year = 4 human years 

What are the 6 Stages of a Cat's Life?

The 6 stages of a cat's age are:

Life Stage Cat’s Actual Age Human Age Equivalent
Kitten 3 months 6 months 12 months 4 years 9 years 15 years
Junior 12 months 18 months 2 years 15 years 20 years 24 years
Prime 3–6 years 28–40 years
Mature 7–10 years 44–56 years
Senior 11–14 years 60–72 years
Geriatric 15+ years 76+ years

How Do I Tell a Cat's Age?

To tell how old is my cat check the following:


The cat's initial baby teeth first emerge between 2 to 4 weeks of their birth. In older cats, the amount of tartar and staining is also an indicator of their age.

  • Condition 
  • Presence
  • Color 


The young cats usually have the bright color of eyes. On the other side, the older cats have a cloudy appearance.

  • Condition 
  • Cloudy 


The young cats' fur is fine and soft while the older cats have coarser and white patches on their skins.

  • Coarser
  • White or Gray Patches 

Cat Age Chart:

A cat to human years chart indicates cat years to human years.

Cat Years Human Years
1 15
2 24
3 28
4 32
5 36
6 40
7 44
8 48
9 52
10 56
11 60
12 64
13 68
14 72
15 76
16 80
17 84
18 88
19 92
20 96
21 100
22 104
23 108
24 112
25 116

Also Visit: Dog age calculator to check what is your dog's age equivalent to human years.